Rotary internal-combustion engine.



G. HUSGHER.

ROTARY INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JAN. 6. 1908.

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ROTARY INTERNAL OOMBU8TION ENGINE.

APPLIGATIOR FILED JAN. 6. 1908.

Patented Mar. 2, 1909.

2 SHEETS-SHEET 2.

J'wvm Far Jff/Zmey A tjljUl-tlj l-IUSCHER, O1" BERLIN, GERMANY.

ROTARY INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented March 2, '1 Mr Application filed January 6, 1908 Serial No. 409,589.

To all whom it may concern:

Be it kntmn that l, GEoRG ll'UsoHER, a subject of the King of Bavaria, residing at Berlin, 51., Germany, have invented certain new and useful Improvements in llotary lnternal-Combustion Engines, of which the following is a specification.

This invention relates to improvements in internal combustion engines.

The improved engine is of the rotary piston type and adapted to be actuated by means of liquid or gaseous fuel.

An embodiment of the invention is shown in the annexed drawings in which Figure 1 is a vertical section of the im proved engine. Fig. 2 is a sectional front elevation, parts being broken away. Fig. 3 is a detail view of one of the fluid inlet ducts of the working chamber. Figs. 4 and 4 illustrate a detail of the cooling pump. Fig. Sis an elevation of the piston disk, part bein g broken away to show the water channels of thecooling pump. Fig. 6 is a section of the piston disk and part of the casing inclosing" same. Fig. 7 is a diagram illustrating he (HID operatingthe inlet valves. Fig. 8 represents a detail of pawls forming art of regulol ing device for the engine. ig. 9 is :1 side elevation of the regulating device. Fig. 10 is a front view of the same.

The engine comprises a bi-partite rotary piston disk (I, which also serves as a water pump for cooling purposes and has at its ('ll'Ullllli ltllfl piston members i), b, b. In view of the high temperatures generated these memb rs. are made of very resistant material and are so arranged that the maximum of space remains available and that residual impuril llS are driven toward the exlnmsl ports. The shaft 0 on which are mounted the cam disk If and star-slmped res lielll plule e, is rotatable in ball bearings in the frame. The casing consists of two side parts 1' and f and a central ring g, which invlosc bet \Hi'll them and the piston a an annular working chamber. The working chamber is divided into separate compartments b means of laterally arranged charging pistons I, It, It". If that is to say, into explosion and expansion clm nbvrst, fl, 1'), i, which have supply ducts l', It, It", It" and exhaust ports 1, l, l", I respectively. The exhaust ports remain open. The left hand ends (Fig. l) of the charging pistons 7!, h, 7L2, I!" are formed asordinary pistons with inserted packing rings. The bot y of the piston has a prolongation in the form of a housing 9, and a compression chamber In at its right hand end, with two inclinpdseats for valve-cones n and o. The spindle of the valve It is guided in the piston body it. This spindle is in )art hollow and serves as a uide for the spindle of the valve 0. The hol ow sp'indlc contains a spring p which presses the'valvvs against. t 1eir seats. The housing :1 surrounding the space m is open at the rig-1t hand side. and has internallyn seat for the valve 0, and externally forms a cone having its seat on a closing plate rinsertcd into the part of the casing. The charging piston h is surrounded by a cylindrical housing or cylinder s [Lu-d to the part f of the casing. An automatic inlet valve u is located in the cover t of the cylinder 8. The charging iston It is controlled by the cam disk d, t e resilient plate 0 and the s ring v. For this )urpose pins w and a: are 'ed to the piston On the pin 21; is mounted a steel roll w running on the cam disk at. The cam surfaces are so designed that their angles of rise decrease as the degree of com ression increases (Fig. 7).

The action of ti 8 engine, described with reference to Figs. 1 and 2, is as follows: The piston disk (1 rotates in the direction indicated by the arrow in Fig. 2. \Vhen the charging piston it has been thrust behind the rotating piston l) by the springs v and e, and has discharged its contents, the spade y in the cylinder e is free and gas can flow through the suction valve it into said cylinder 8, to fill the s ace 3 whereupon the said valve to is close The charging piston h is thereupon moved by the cam disk d into the 708ition in which the piston h is shown, an the gases are forced through small ducts z in the piston body it into an annular chamber beiind the valve 11, and thrust the same from its seat, against the action of the fairly powerful spring the gases then flow into the chamber m c oscd by the valve 0. Eddy currents of gas are produced during this action, and cause the ases to become very intimately mixed. hen the charging piston It has been thrust into its end position the capacity of the compression chamber or is reduced to a minimum, and the pressures in the compression chamber 1] and the (ompression chamber m are in equilibrium, so that the valve 11 is closed and the gases are inclosed in the chamber m. At this moment the rotating piston it arrives behind the charging piston h. The cam disk 1/ holds the piston la in the position in which the iston I t is shown until the rotatii'ig piston 1 has passed the piston 71. During this time the ases compressed in the chamber m become l lieated by contact with the walls of the said a chamber, and their pressure is thus increased. l W'hen the piston b has passed the piston 12 l the cam disk d releases the pin and the piston h is thrust by the springs r into the working chamber t behind the rotating piston b, so that the space y becomes free again, and a fresh charge of ases can enter through the valve u. The c iarging piston h thus sucks in a fresh charge while an unused charge is still in the chamber m. At this moment the spring 6 reaches the pin to and thrusts the valve surfaces of the piston it against the valve seat on the late r. The valve 0 is not 0 ened, by a PIOJQCtiOIl of the late 1", until t e charging piston h is comp etely closed behind the piston b, whereupon the highly; compressed ases flow through'the duct (separately s iown in Fig. 3) and through the platinum fabric 1 therein, the gases being ignited by contact with the said fabric, and exploding in the chamber i behind the piston b, so that the latter is driven in the direction indicated by the arrow, until it has passed. the exhaust port 1 through which the gases r flow. This action takes place twelve times during one -revolution of the engine shown. The rotating pistons are actuated alternately, but always two at a time. In most cases the iston disk itself can act as a fly wheel. An indefinite number of pistons may be provided, either more or fewer than shown in the drawing, according to the degree of uniformit of rotationdesired, andto the prescribe limits of dimensions and weight.

Since the tempcrature in the nvorking l'ihainber eif the engine i s-very high while the engine is running, efiiment cooling must be provided for, and having'regard to theposition of the bearin of the shaft 0 the piston disk a must also e cooled. For this purpose the disk itself is made to act as a pump, so that a separate water pump can be dispensed with.

The disk a is divided per endicularl to its axis and has an annular ore into w ich a vaned disk 2 (Fig. 4) is fitted and fixed. A copper rin 3 also fits closely into this bore. One half 0 the disk has inflow ducts 4, and the other half has outflow ducts 5. The rin in which the ducts 4 and 5 are arran ed is s ightly recessed at the piston'disk an in the casing, so that impurities carried by the water are Washed away and do not get between the surfaces of the piston disk and casing. The disk 2 has aspiral vane on each side fittin closel against the walls of the iston dis so t at direct spiral ducts are ormed. y

The actioh of the pump is as follows. The

piston disk rotates to the right. Water flows into the annular conduit 6 in the part f of the casing and thence through ducts 4 to the interior of the piston disk. By reason of the ra id rotation the water is driven outward y centrifugal force and is compelled to [low through the ducts to the left Since the two directions indicated in the figure are opposed to each other the rotational velocity of the water must necessarily be smaller than that of the disk a. The inertia of the water increases the difierence between the velocities. The lagging of the water is used on the other side oi the vane disk 2, where the spiral duct has the opposite direction, to drive the water through this duct, as indicated by arrows in Fig. 4, in which the outer arrow indicates the direction or rotation of the disk and the inner arrow the direction of flow of the water. The water isthus brought back to the center of the disk, a ainst the action of centrifugal force, and t en. flows through the ducts 5 to the part oi' the casing, which also contains spiral ducts.

passes through the central rin g back to the :part f and to the conduit 7 eading to the discharge orifice. From the latter the water flows to a cooler, in order to be cooled before being used again.

A throttle valve is provided for regulating the supply of gas, and also a regulating device for the engine which is shown in Figs. 9 and 10. This latter device serves for regulating the number of revolutions and for safeguarding the engine. It comprises a ring 8 guided by suitable bracket-bearings 9 fixed to the casing, tappets 10, 11, 12 and 13, a spring- 14 in a tube 15, a ring 16 engaged by the spring 14, and a sleeve 17 connected 1 "to a. rodwiS... .The .latten may be controlled by a governor or by hand. Pawls 19, 20, 21 and 22 are pivoted to cylinders .9, 8 s and s and have rearward prolongations to which springs 23 are fixed (Fig. 8). Let it be assumed that the rod 18 is pulled in the direction indicated by the arrow. The tappet 10 releases the prolongation of the pawl 19, so that the latter is thrust b the spring 23 behind the pin a: fixed to the charging iston h, and thus hold back the said piston.

hen the rod 18 is released again the spring 14 pushes the ring 8 and tappet' 10 back to their original positions; the tappet '10 pushes back the pro ongation of the pawl 19 and the latter releases. the pin a", so that the charging iston It can resume its function. If, instea of bein released, the rod 18 is moved further in t c direction indicated by. the arrow, the tappet 12 releases the prolongation of the pawl 21, and the latter can engage the pin it of the charging piston it, so that the latter'is also put out of action, as shown in Fig. 19. Further movement oi the rod 18 produces the same result with regard to the charging pistons h and h.

The regulator is thus adapted to put the charging pistons separately into and out of action.

Air can also be used for cooling, more par- 5 combination with a casing, ofa rotary disk ticularly in the case 01 small motors.

What I claim as my invention and desire to secure by Letters Patent of the United States is 1. In an internal combustion engine the combination with a casing of a rotary disk having a plurality of radial piston members, a corresponding series of explosion chambers formed 1n the casing and in (30111111Ulllttttiflll with said iston members, a series of slidable piston va ves adapted to admit compressed charges to said explosion chambers, a cam adapted to move the piston valves in one direction and springs adapted to move said valves in the reverse direction, substantially as described.

2. In an internal combustion engine the combination with a casin of a rotary bipartite disk having a plurality of radial )iston members, a corresponding series of explosion chambers formed in the casing and in communication with said piston members a series of double slidable pairs of piston valves each having between them a compression chamber and adapted to admit compressed charges to vsaid explosion chambers, a cam adapted to move the piston valves in one direction and springs adapted to move said valves in the reverse direction, substantially as described.

3. In an internal combustion engine the combination with a casing of a rotary disk having a lurality of radial )iston members and provi ed with a channel having inlet and outlet for cooling. medium, a series of explosion chambers corresponding to the piston members and in communication therewith, a

series of slidable piston valves adapted to admit compressed charges to said explosion chambers, a cam adapted to move the piston valves in one direction and springs adapted to move said valves in the reverse direction substantially as described.

4. In an internal combustion engine the having a plurality of radial piston members, a corresponding series of explosion (littiillttlh formed in the casing and iii communicatiiin with said piston members, a series of slidable piston valves, adapted to admit compressed charges to said explosion chambers, a cam adapted. to move the piston valves in one direction, springs adapted to inov J said valves in the reverse direction and nieai' s for placing said piston valves singly and collcctivcly inio and out of action substantially as described.

5. In an internal combustion cnginc the combination with a casing of a rotary bipartite disk having a ph irality of re dial piston members, and provided with a channc having inlet and outlet for cooling medium, a series of explosion chambers formed in the casingand communicating with said piston members, a series of double slidabh pairs of piston valve-s each having between them a compression chamber and adapted to admit compressed charges tomid explosion chambers, a cam adapted to operate the piston valves in one direction, springs adapted to operate said valves in the reverse lllIt ction, and means for placing said )iston alvcs singly and collectively into and out of act ion according to the desired degree of power sol) stantially as described.

In witness whereof I have signed this pcci fication in the presence of two witnesses.

GEORG HUSCI 1 Eli.

Witnesses:

WoLnnMAn IIAUPT, IIENRY IIASPER. 

